Right now
The most recent data we hold from NOAA arrived 12 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 18 May 2026 at 22:30 UTC. It is kept here as a record.
No stronger detection stands among the 29 recorded within 20 km of this point since 23 April 2026 — 7 others scored the same. Another comparable one was recorded here earlier the same day. 14 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Tornado Warning issued May 18 at 5:19PM CDT until May 18 at 5:30PM CDT by NWS Kansas City/Pleasant Hill MO
Nearby, since 23 April 2026
- June 14, 2026 · score 16 · 6.3 km
How we know
7 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 46 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Critical |
| Calamity Score (ours) | 46 / 100 |
| Legacy data-support index | 0.70/1 |
| Coordinates | 40.0801, -95.8287 |
| Nearest City | Saint Joseph (90 km) |
| Urban exposure index (PEI) | 0 within 50 km |
| Impact Tier | minor |
| Timestamp | 2026-05-18T22:19:00.000Z |
| Source | https://api.weather.gov/alerts/merged_Tornado Warning_noaa_urn:oid:2.49.0.1.840.0.91cb3c198f9528e45b0bf6866ee7fec6 |
Physical priority index · v1. Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-05-18T22:19:00.000Z.
First archived: 2026-05-18T22:21:02.831Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Tornado Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Atchison, MO; Richardson, NE; Marshall, KS; Washington, KS and 5 more areas |
| Headline | Tornado Warning issued May 18 at 5:19PM CDT until May 18 at 5:30PM CDT by NWS Kansas City/Pleasant Hill MO |
| Expires | 2026-05-18T17:30:00-05:00 |
| SenderName | NWS Kansas City/Pleasant Hill MO |
| HasExactCoords | true |
| MergedCount | 9 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.91cb3c198f9528e45b0bf6866ee7fec60d4c74c6.001.1","noaa_urn:oid:2.49.0.1.840.0.4201590d49768a8269f8fa3e0d31b107dfe03e35.001.1","noaa_urn:oid:2.49.0.1.840.0.8d1a02ce7d0a414f051214a9f873e0d30705624d.001.1","noaa_urn:oid:2.49.0.1.840.0.c6d37b85fe50b7fbfe039f483ccf2c7762f3cb5f.001.1","noaa_urn:oid:2.49.0.1.840.0.e7d26a3aaa129e294f481fd401ae0b8cec8aaea0.002.1","noaa_urn:oid:2.49.0.1.840.0.830faa68e6613d865f252576a4ba7295f8e10f2b.001.1","noaa_urn:oid:2.49.0.1.840.0.acdd29d0347d09ec3d726fb135075a318369d6d4.001.1","noaa_urn:oid:2.49.0.1.840.0.84f70eaa3525d5e7af970f28c8a80461e920ddff.001.1","noaa_urn:oid:2.49.0.1.840.0.cbb7383c57d3d1d96a11a2b76e5ca5c3e5e5ac3a.001.1"] |
| Iem TypeSummary | G |
| Iem Magnitude | 81 |
| Iem Unit | MPH |
| Iem City | 3 ESE Lewiston |
| Iem County | Pawnee |
| Iem State | NE |
| Iem Wfo | OAX |
| Iem Remark | Caller reported an 81 mph wind gust measured from a personal weather station. Also reported 6 to 8 inch diameter tree limbs broken. |
| MergedSources | [{"id":"iem_H_40.210_-96.350_1779138660000","source":"iem","severity":"low","severityValue":25,"timestamp":1779138660000,"latitude":40.21,"longitude":-96.35},{"id":"iem_H_40.000_-96.350_1779138900000","source":"iem","severity":"low","severityValue":25,"timestamp":1779138900000,"latitude":40,"longitude":-96.35},{"id":"iem_G_40.410_-95.860_1779140040000","source":"iem","severity":"low","severityValue":25,"timestamp":1779140040000,"latitude":40.41,"longitude":-95.86},{"id":"iem_G_40.350_-96.050_1779138720000","source":"iem","severity":"low","severityValue":25,"timestamp":1779138720000,"latitude":40.35,"longitude":-96.05},{"id":"iem_T_40.050_-96.240_1779140700000","source":"iem","severity":"low","severityValue":25,"timestamp":1779140700000,"latitude":40.05,"longitude":-96.24},{"id":"iem_G_40.220_-96.350_1779137220000","source":"iem","severity":"low","severityValue":25,"timestamp":1779137220000,"latitude":40.22,"longitude":-96.35}] |
Safety Information
If a tornado warning is issued: go to a basement or an interior room on the lowest floor, away from windows. A vehicle and a mobile home are not shelter. Cover your head and neck. Wait for the official all-clear before going outside, and watch for downed power lines and gas leaks afterwards.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Review the area, threshold and delivery channel in your account.
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